A flippant, frivolous man may ridicule others, may controvert them, scorn them; but he who has any respect for himself seems to have renounced the right of thinking meanly of others.

Since you know me and my destiny only too well, you probably also know what attracts me to all unfortunate people.

The clever reader who is capable or reading between these lines what does not stand written in them but is nevertheless implied will be able to form some conception.

He who moves not forward, goes backward.

In all times it is only individuals that have advanced science, not the age.

No limit, no definition, may restrict the range or depth of the human spirit's passage into its own secrets or the world's.

The best benefit we derive from history is the enthusiasm it excites.