How terrible is wisdom when it brings no profit to the wise.

Alas, how terrible is wisdom
when it brings no profit to the man that's wise!
This I knew well, but had forgotten it,
else I would not have come here.

…but I never shall be very wise, I'm afraid.

Knowledge all by itself, without deep wisdom, ends up becoming despair.

where ignorance is bliss, ‘tis folly to be wise.

Whoever among you thinks himself wise must become a fool to be truly wise

Without courage, wisdom bears no fruit.

The wise man through an excess of wisdom is made a fool.

The end of wisdom is to dream high enough to lose the dream in the seeking of it.

To a fool time brings only age not wisdom.

Wisdom comes from experience. Experience is often a result of lack of wisdom.

In fact this type of man who is devoted to the study of wisdom is always most unlucky in everything, and particularly when it comes to procreating children; I imagine this is because Nature wants to ensure that the evil of wisdom shall not spread further throughout mankind

It is impossible to love and be wise.

There is a wisdom that is woe; but there is a woe that is madness.