So long as a man imagines that he cannot do this or that, so long as he is determined not to do it; and consequently so long as it is impossible to him that he should do it.
Baruch Spinoza
Be not astonished at new ideas; for it is well known to you that a thing does not therefore cease to be true because it is not accepted by many.
Baruch Spinoza
The greatest pride, or the greatest despondency, is the greatest ignorance of one's self.
Baruch Spinoza
Self-complacency is pleasure accompanied by the idea of oneself as cause.