Employ your time in improving yourself by other men's writings so that you shall come easily by what others have labored hard for.

Are you not ashamed of caring so much for the making of money and for fame and prestige, when you neither think nor care about wisdom and truth and the improvement of your soul?

The only true wisdom is in knowing you know nothing.

The unexamined life is not worth living.

Wonder is the beginning of wisdom.

I only know that I know nothing

The beginning of wisdom is the definition of terms.

هرچه جستجو کردم کسی را نیافتم که به نادانی خویش اعتراف کند. حال که من میدانم خود از همه نادان ترم، داناترین مردمانم.

By far the greatest and most admirable form of wisdom is that needed to plan and beautify cities and human communities.