Wherever you work, work hard and educate yourself continuously. You must never forget social welfare, ethics and honesty. However, there is no guarantee for your career progression. Therefore, don't expect that only the best people will be promoted.

Life is the greatest teacher because it educates even those who really hate to learn.

Knowledge can be acquired by education, reading, communicating and observing, but also simply by living.

Unfortunately, people who always tell the truth don't have many friends.

Concerning mistakes, follow three simple rules. Firstly, correct a mistake that you made whenever it is possible. Secondly, don't repeat the same mistakes. Thirdly, learn from past mistakes.

Superficial knowledge is potentially more dangerous than ignorance. It gives a false sense of security encouraging an ignorant man to persevere in his efforts that can result in huge damage.

In the frame of a known phenomenon of life, a human could be defined as the only proven thinking creature.

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.

It is impossible to avoid failures in life. Don't be afraid of them. Consider rather how to learn from your own failures.