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“True happiness is to enjoy the present, without anxious dependence upon the future, not to amuse ourselves with either hopes or fears but to rest satisfied with what we have, which is sufficient, for he that is so wants nothing. The greatest blessings of mankind are within us and within our reach. A wise man is content with his lot, whatever it may be, without wishing for what he has not.”
― Seneca

“Associate with people who are likely to improve you.”
― Seneca

“Non est ad astra mollis e terris via" - "There is no easy way from the earth to the stars”
― Seneca

“Our knowledge can only be finite, while our ignorance must necessarily be infinite.”
― Karl Popper