There is nothing either good or bad, but thinking makes it so' - who said that?

This line is taken from Shakespeare’s Tragedy play Hamlet.
His famous quotations are below :

“The fool doth think he is wise, but the wise man knows himself to be a fool.”

“Love all, trust a few, do wrong to none.”

“Love looks not with the eyes, but with the mind,
And therefore is winged Cupid painted blind.”

“This above all: to thine own self be true,
And it must follow, as the night the day,
Thou canst not then be false to any man.”

Source: Shakespeare.com