I feel passionately about how I express myself. Language is the greatest motivating force. You can phrase something positively and inspire people to do their best, or negatively and make them feel worried, uncertain, and self-conscious. You can talk at a fast pace and people will get nervous, feel afraid to bring up extraneous thoughts. But those are the very thoughts that might be most important! They might represent that person's best thinking. If you're rushed, you're simply not going to get at that extra level of thinking.