Garrett Richardson discusses his philosophy of teaching language in 3 key ways: 1) Breaking down complex concepts into simple terms that even babies can understand, allowing students to build up their understanding from a basic level. 2) Ensuring students do not lack in any particular language area by drawing from multiple teaching methods. 3) Motivating students emotionally by understanding their perspective and struggles as a language learner himself. He aims to connect with students and encourage them through challenges.