Astronomy compels the soul to look upwards and leads us from this world to another.

The beginning is the most important part...for that is the time character is being formed.

I really do not know, Socrates, how to express what I mean. For somehow or other our arguments, on whatever ground we rest them, seem to turn round and walk away from us.

That which is apprehended by intelligence and reason is always in the same state; but that which is conceived by opinion with the help of sensation and without reason, is always in a process of becoming and perishing and never really is.

It gives me great pleasure to converse with the aged. They have been over the road that all of us must travel, and know where it is rough and difficult and where it is level and easy.

One man cannot practice many arts with success.

Let him take heart who does advance, even in the smallest degree.