It is during our darkest moments that we must focus to see the light.

It is the mark of an educated mind to be able to entertain a thought without accepting it.

Educating the mind without educating the heart is no education at all.

Those who excel in virtue have the best right of all to rebel, but then they are of all men the least inclined to do so

All virtue is summed up in dealing justly

The greatest virtues are those which are most useful to other persons

That in the soul which is called the mind is, before it thinks, not actually any real thing.

The soul can not think without a picture

It is unbecoming for young men to utter maxims

Our account does not rob mathematicians of their science, by disproving the actual existence of the infinite in the direction of increase, in the sense of the untraceable. In point of fact they do not need the infinite and do not use it. They postula