It is only a man's own fundamental thoughts that have truth and life in them. For it is these that he really and completely understands. To read the thoughts of others is like taking the remains of someone else's meal like putting on the discarded clothes of a stranger.
The discovery of truth is prevented more effectively not by the false appearance things present and which mislead into error not directly by weakness of the reasoning powers but by preconceived opinion by prejudice.
As the biggest library if it is in disorder is not as useful as a small but well-arranged one so you may accumulate a vast amount of knowledge but it will be of far less value than a much smaller amount if you have not thought it over for yourself.
Great minds are related to the brief span of time during which they live as great buildings are to a little square in which they stand: you cannot see them in all their magnitude because you are standing too close to them.
They tell us that suicide is the greatest piece of cowardice... that suicide is wrong when it is quite obvious that there is nothing in the world to which every man has a more unassailable title than to his own life and person.