We must never assume that which is incapable of proof.
Insincerity is always weakness; sincerity even in error is strength.
Originality is independence, not rebellion; it is sincerity, not antagonism.
Science is the systematic classification of experience.
Personal experience is the basis of all real Literature.
The true function of philosophy is to educate us in the principles of reasoning and not to put an end to further reasoning by the introduction of fixed conclusions.
When a man fails to see the truth of certain generally accepted views, there is no law compelling him to provoke animosity by announcing his dissent.
Philosophy and Art both render the invisible visible by imagination.
The delusions of self-love cannot be prevented, but intellectual misconceptions as to the means of achieving success may be corrected.
Sincerity is not only effective and honourable, it is also much less difficult than is commonly supposed.
Endeavour to be faithful, and if there is any beauty in your thought, your style will be beautiful; if there is any real emotion to express, the expression will be moving.
In complex trains of thought signs are indispensable.
Books have become our dearest companions, yielding exquisite delights and inspiring lofty aims.