Fyodor Dostoevsky. Teen (№ 446282)

With laughter, a certain person gives himself away completely, and you suddenly find out all his ins and outs. Laughter requires, first of all, sincerity, but where is sincerity in people? Laughter requires good-naturedness, and people most often laugh maliciously. Sincere and good-natured laughter is gaiety, but where is gaiety in people in our age?