Do exactly what you would do if you felt most secure.

A good decision is based on knowledge and not on numbers.

The aim of education is the knowledge, not of facts, but of values.

It's always too early to quit.

Risk comes from not knowing what you're doing.

Knowledge has to be improved, challenged, and increased constantly, or it vanishes.

Consider your origins: you were not made to live as brutes, but to follow virtue and knowledge

The knowledge of yourself will preserve you from vanity.

Life lived for tomorrow will always be just a day away from being realized.

Everything that irritates us about others can lead us to an understanding of ourselves.