"Continuously feeling superior is a characteristic of immaturity."

"We should enjoy every minute we live today because who knows if we will have a chance to do so tomorrow."

"The key to successful social behaviour: be approachable and understand the needs of others."

"In reality, there is no highway to success. Therefore, be prepared for difficulties."

"Acquiring knowledge is the most fruitful effort."

"There's no reason to cry over spilled milk. People cannot change the things that have already happened."

"A man's vanity often goes hand in hand with his lack of knowledge."

"To smile sincerely is acceptable after making mistakes " that is the best way to feel cheerful and repeat the same mistakes."

"Problems often become worse if incompetent people try to solve them."

"There is no such complicated situation which people could not make more complicated."

"The precondition for solving a problem is having a clear idea on how tosolve it."

"The older the friendship, the stronger the trust."

"Those who have no knowledge are often willing to occupy influential positions with the aim of acquiring every possible benefit."

"In real life, the truth is a rarity, while lies are common place."

"Some old and unrealized ideas will undoubtedly be actualized when their time comes."

"We should always respect our teachers, because transforming children into knowledge-oriented young people is a precious and extremely difficult job."

"Solving a complicated problem can be frustrating. You can have good problem solving skills, but sometimes a problem seems like it has no solution. Nevertheless, never give up."

"Don't be afraid to study hard: knowledge never exhausts the mind."

"A wise man is humble, knowing he actually doesn't know much."

"Knowledge is the key driver of the progress of civilization."

"Being blinded in love and friendship is a common mistake."

"A wise man does not give quick answers to complex questions " he observes, analyzes and contemplates."

"Being able to endure is sometimes the key to survival."

"It seems quite pointless to waste health relentlessly in order to earn money that we shall spend on recovering health."

"It can be accepted that there is a price for man's work, time spent or service done, but never for human dignity."

"Nowadays, using a computer has become a way of life."

"Only knowledge and truth may result in freedom of mind."

"It is equally important to learn from experience and from books."

"Tell us which ideas you promote and we will know which type of person you are."

"It is absolutely certain that we must act to protect nature much more efficiently than ever before. Tomorrow " when mankind will step forward to a totally uncertain future " will be too late."

"An idea occurs in the mind, where it is confined and useless. An idea lives when it leaves the mind."

"Every fool has an idea how to change the world. Wise people think about how to improve the world around them."

"Understanding how little we know is crucial to gaining knowledge."

"Acquiring knowledge through the centuries has influenced human society more than all other factors."

"Only a man of knowledge is capable of giving constructive criticism."

"Managers can use power, money or certain circumstances to achieve short-term results. However, motivation is crucial for achieving long-term results."

"When an influencing idea comes to life, people cannot exactly predict all its inevitable consequences."

"Having an open mind is the most important precondition for creatingnew ideas."

"Older people sometimes talk about the good old days when life was better. In fact, they talk nostalgically about their own youth that was irretrievably gone. The past century has made enormous progress in all fields. The standard of living, work environment, health care quality and mobility, and the availability of cultural programs, recreational activities and information " all that clearly speaks in favor of nowadays."

"In my opinion, the author-level metric can distort a real author's citation impact. For example, an author who has an h-index = 2 obtained on the basis of two published papers of which each is cited twenty times is more influential than an author who has an h-index = 3 obtained on the basis of three published papers of which each is cited three times."

"There is no greater achievement than being a grandfather who tells fairy tales to grandchildren."

"An ideal world inhabited by carefree people is nothing more than a utopia."

"Learning continuously is the best way to build one's intellectual capacity."

"Knowledge as such can never be worthless."

"Time runs independently of us, and we cannot comprehend the flow of time. Time is a category in itself."

"How to advise parents for being successful in raising children stillremains an important unsolved problem."

"Observing is the basis of wisdom."

"Open-mindedness is a precondition for generating new ideas, but focusing on the problem is almost equally important."

"There are roads where people go, and where they should arrive is their mission."

"Reading might be the root of ideas and inventions, even in the case of leisure reading."