Who said "Hope is for the weak."?

This quote is attributed to Sherlock Holmes.

Hope is for the weak. - Sherlock Holmes

"Hope is for the weak."

Sherlock Holmes

"The game is afoot!"

"Elementary, my dear Watson."

"When you have eliminated the impossible, whatever remains, however improbable, must be the truth."

"I am not a romantic, but I am a realist."