Osho said this quote
“ Man is a question mark . . . and it is a blessing—celebrate it. It is a blessing because only man is a question mark; no dog is, no tree is. The rose bush is beautiful but not as beautiful as man, and the moon is beautiful but not as beautiful as man—because they are unconscious. Only man is consciously on a quest. And how can you be on a quest if you don’t have a question mark in your being? ”