This thesis deals with the theme of children and pensioners in Lou Marinoff's philosophical practice. In order to be better acquainted with the topic itself, we first explained what exactly philosophical practice entails in general. So, after the introduction, we focused on Lou Marinoff himself, who is one of the leading philosophers of philosophical practice and the founder of the American Philosophical Practitioners Association (APPA). He focuses his research on how leadership in philosophy is a new and practical way to navigate through life and encourage the formation of your own opinions on important life and philosophical topics. Continuing further in the work, we dealt with different types of philosophical practice, starting with philosophical counselling, which is perhaps the most tangible form of this type of philosophy. It is based on a conversation between a philosopher and a client or interlocutor in which the latter presents his dilemmas or life problems, after which the philosopher lists potential solutions to these problems that he finds in the ideas of past philosophers. Moving on, we focus on philosophy cafés—organized philosophical conversations that encourage growth in philosophy through discussions on various philosophical topics. Following this lead, we continue to deal with philosophy for students and philosophy for prisoners. Both subtitles deal with explaining how to bring philosophy to these groups of people and how to get them interested in philosophy so that it might help them. After that, we deal with critical thinking—almost the most crucial aspect of philosophical practice in general, seeing it as the goal we strive to achieve through philosophical reflection. Finally, we take a closer look at what philosophical practice actually is for Lou Marinoff and approach philosophy with children and pensioners in more detail, highlighting the importance and goals of these types of philosophical practice.