“A traveler without knowledge is a bird without wings.”
“A traveler without observation is a bird without wings.”
“Man is a bird without wings and a bird is a man without sorrow.”
“Intelligence without ambition is a bird without wings.”
“Without love we all like birds with broken wings.”
“A bird without wings and a man without art are both condemned to wander in low places; they can never soar up to those unrivalled heights.”