Who said “The deeper the sorrow the less the tongue has it.”?

“Where there is sorrow there is holy ground.”

“The pleasure that is in sorrow is sweeter than the pleasure of pleasure itself.”

“The path of sorrow, and that path alone, Leads to the land where sorrow is unknown.”

“Since my earliest childhood a barb of sorrow has lodged in my heart. As long as it stays I am ironic -- if it is pulled out I shall die.”

“There is no wisdom in useless and hopeless sorrow, but there is something in it so like virtue, that he who is wholly without it cannot be loved.”

“Who is wise? One who learns from all.”

“Who is a wise man? He who learns of all men.”

“This is the punishment of a liar: he is not believed, even when he speaks the truth.”

“Everyone whose deeds are more than his wisdom, his wisdom endures; and everyone whose wisdom is more than his deeds, his wisdom does not endure.”

“No labor, however humble, is dishonoring.”

“The end result of wisdom is... good deeds.”