Hast thou not known? Hast thou not heard, that the everlasting God, the Lord, the Creator of the ends of the earth, fainteth not, neither is weary? there is no searching of His understanding. He giveth power to the faint; and to them that have no might he increases strength. Even the youths will faint and be weary, and the young men will utterly fall: But they that wait upon the Lord shall renew their strength; they will run, and not be weary; and they shall walk , and not faint.
Isaiah 40: 28 – 31
A bird does not sing because it has an answer, it sings because it has a song.
No bird soars too high if he soars with his own wings.