What you lack is not knowledge, but thinking! What you lack is not knowledge, but thinking! What you lack is not knowledge, but thinking! What you lack is not knowledge, but thinking! What you lack is not knowledge, but thinking! What you lack is not knowledge, but thinking! What you lack is not knowledge, but thinking! What you lack is not knowledge, but thinking! What you lack is not knowledge, but thinking! What you lack is not knowledge, but thinking! What you lack is not knowledge, but thinking! What you lack is not knowledge, but thinking!