Aristotle

Education is an ornament in prosperity and a refuge in adversity. ”

Education is the best provision for old age. ”

Man is the only animal capable of reasoning, though many others possess the faculty of memory and instruction in common with him. ”

The duty of rhetoric is to deal with such matters as we deliberate upon without arts or systems to guide us, in the hearing of persons who cannot take in at a glance a complicated argument or follow a long chain of reasoning. ”

The one exclusive sign of thorough knowledge is the power of teaching. ”

The roots of education are bitter, but the fruit is sweet. ”

Dignity does not consist in possessing honors, but in deserving them. ”

Bashfulness is an ornament to youth, but a reproach to old age. ”

We are not angry with people we fear or respect, as long as we fear or respect them; you cannot be afraid of a person and also at the same time angry with him. ”

For one swallow does not make a summer, nor does one day; and so too one day, or a short time, does not make a man blessed and happy. ”