A hidden connection is stronger than an obvious one.

You cannot step into the same river twice

He who runs behind truck is exhausted, he who runs in front of truck is tired.

Everything flows and nothing abides; everything gives way and nothing stays fixed.

You can't go home again. Your childhood is lost. The friends of your youth are gone. Your present is slipping away from you. Nothing is ever the same.

People that love wisdom must be acquainted with very many things indeed.