Final answer:
The given statement advises against rash criticism and encourages understanding others' lack of advantages before critiquing. It highlights the importance of empathy and self-reflection, suggesting that criticism should be approached with caution, considering personal context.
Step-by-step explanation:
The advice given about criticising someone is to exercise caution and empathy, understanding that not everyone has had the same advantages as you may have had. The advantages being referred to are your own -- the life benefits, opportunities, and circumstances that you have experienced, which others may not have had access to. The reason one should remember others' advantages, or the lack thereof, is to foster understanding and empathy, recognizing that differing personal contexts may affect behavior and decisions. According to the statement, there isn't a specific appropriate time mentioned for criticism, but the overarching message is to reflect on oneself and consider the other person's situation before engaging in criticism.